136 is the maximum length of the SQLCA.
The SQLCA (SQL Communication Area) in IBM Db2 is a data structure used to communicate information between the application program and the Db2 database manager. In Db2, the SQLCA has a fixed length of 136 bytes. This includes fields for SQLCODE, SQLSTATE, and other related information.
So, the correct answer to the maximum length of SQLCA in Db2 is 136 bytes.